// Copyright (c) 2017, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

/*@testedFeatures=checks*/
library test;

class C<T> {
  void f1(T /*@covariance=genericImpl*/ x) {}
  void f2(int x) {}
}

class D extends C<num> {
  void f1(covariant int /*@covariance=explicit*/ x) {}
}

void g1(dynamic d) {
  d.f1(1.5);
}

void g2(dynamic d) {
  d.f2(1.5);
}

void test() {
  g1(new C<int>());
  g2(new C());
  g1(new D());
}

main() {}